NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

3 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, last 30 days — NPA 939
METROPCS, INC. 3
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2019-08-13 939-298-2XXX 2000–2999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J RAMEY PR
2019-08-09 939-992-2XXX 2000–2999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J YAUCO PR
2019-07-30 939-220-5XXX 5000–5999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J HUMACAO PR
2019-06-28 939-592-3XXX 3000–3999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J BAYAMONSUR PR
2019-04-19 939-577-0XXX 0000–0999Assigned METROPCS, INC. 5562 BAYAMONNOR PR
2019-04-18 939-592-2XXX 2000–2999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J BAYAMONSUR PR
2019-03-06 939-345-6XXX 6000–6999Assigned NATURAL G.C. INC. - PR 985G MOROVIS PR
2019-03-05 939-299-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 MAYAGUEZ PR
2019-02-28 939-200-0XXX 0000–0999Assigned NATURAL G.C. INC. - PR 985G AGUADILLA PR
2019-02-28 939-355-5XXX 5000–5999Assigned NATURAL G.C. INC. - PR 985G BAYAMONNOR PR
2019-02-13 939-638-6XXX 6000–6999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J BAYAMONSUR PR
2019-02-13 939-638-7XXX 7000–7999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J BAYAMONSUR PR
2019-02-13 939-638-8XXX 8000–8999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J BAYAMONSUR PR
2019-01-23 939-845-8XXX 8000–8999Assigned LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J CAROLINA PR
2019-01-03 939-300-0XXX 0000–0999Assigned NATURAL G.C. INC. - PR 985G SANLORENZO PR
2019-01-03 939-300-3XXX 3000–3999Assigned NATURAL G.C. INC. - PR 985G SANLORENZO PR
2019-01-03 939-393-9XXX 9000–9999Assigned NATURAL G.C. INC. - PR 985G BARCELONTA PR
2019-01-03 939-800-0XXX 0000–0999Assigned NATURAL G.C. INC. - PR 985G ADJUNTAS PR
2019-01-03 939-800-8XXX 8000–8999Assigned NATURAL G.C. INC. - PR 985G ADJUNTAS PR
2018-12-31 939-599-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2018-12-17 939-210-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 CAGUAS PR
2018-12-17 939-444-4XXX 4000–4999Assigned NATURAL G.C. INC. - PR 985G ROOSEVLTRD PR
2018-12-17 939-666-6XXX 6000–6999Assigned NATURAL G.C. INC. - PR 985G SANSBSTIAN PR
2018-12-17 939-888-8XXX 8000–8999Assigned NATURAL G.C. INC. - PR 985G LASPIEDRAS PR
2018-12-17 939-900-0XXX 0000–0999Assigned NATURAL G.C. INC. - PR 985G PONCE PR
2018-12-17 939-900-9XXX 9000–9999Assigned NATURAL G.C. INC. - PR 985G PONCE PR
2018-12-17 939-999-9XXX 9000–9999Assigned NATURAL G.C. INC. - PR 985G AGUASBUNAS PR
2018-12-13 939-638-2XXX 2000–2999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J BAYAMONSUR PR
2018-12-13 939-638-4XXX 4000–4999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J BAYAMONSUR PR
2018-12-13 939-638-5XXX 5000–5999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J BAYAMONSUR PR
2018-12-05 939-296-0XXX 0000–0999Assigned NATURAL G.C. INC. - PR 985G JUNCOS PR
2018-12-05 939-412-0XXX 0000–0999Assigned NATURAL G.C. INC. - PR 985G LEVITTOWN PR
2018-12-05 939-412-1XXX 1000–1999Assigned NATURAL G.C. INC. - PR 985G LEVITTOWN PR
2018-12-05 939-445-0XXX 0000–0999Assigned NATURAL G.C. INC. - PR 985G GUANICA PR
2018-12-05 939-592-0XXX 0000–0999Assigned NATURAL G.C. INC. - PR 985G BAYAMONSUR PR
2018-12-05 939-592-1XXX 1000–1999Assigned NATURAL G.C. INC. - PR 985G BAYAMONSUR PR
2018-12-05 939-985-0XXX 0000–0999Assigned NATURAL G.C. INC. - PR 985G COMERIO PR
2018-11-21 939-237-0XXX 0000–0999Assigned SUNCOM DBA T-MOBILE USA 8645 BAYAMONNOR PR
2018-11-21 939-237-1XXX 1000–1999Assigned METROPCS, INC. 5562 BAYAMONNOR PR
2018-09-28 939-399-1XXX 1000–1999Assigned NATURAL G.C. INC. - PR 985G RIOPIEDRAS PR
2018-07-31 939-294-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 ARROYO PR
2018-07-31 939-295-0XXX 0000–0999Assigned SUNCOM DBA T-MOBILE USA 8645 PONCE PR
2018-07-31 939-295-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 PONCE PR
2018-07-31 939-295-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 PONCE PR
2018-07-31 939-295-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 PONCE PR
2018-07-31 939-295-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 PONCE PR
2018-07-31 939-295-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 PONCE PR
2018-07-31 939-295-6XXX 6000–6999Assigned SUNCOM DBA T-MOBILE USA 8645 PONCE PR
2018-07-31 939-295-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 PONCE PR
2018-07-31 939-295-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 PONCE PR

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.